owl - OWL api 查找类的属性

Question

我有一个本体文件，我可以获得其中的所有类（我正在使用 OWL-API）。好吧，我应该检索文件 .owl 中存在的每个类、数据属性和对象属性，有什么方法可以使用 OWL-API 获取它们？

Answer 1

public void test(){

        File file = new File("Ontology.owl");
        OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
        OWLOntology ontology;

        try {
            ontology = manager.loadOntologyFromOntologyDocument(file);

            Set<OWLClass> classes;
            Set<OWLObjectProperty> prop;
            Set<OWLDataProperty> dataProp;
            Set<OWLNamedIndividual> individuals;

            classes = ontology.getClassesInSignature();
            prop = ontology.getObjectPropertiesInSignature();
            dataProp = ontology.getDataPropertiesInSignature();
            individuals = ontology.getIndividualsInSignature();
            //configurator = new OWLAPIOntologyConfigurator(this);            

            System.out.println("Classes");
            System.out.println("--------------------------------");
            for (OWLClass cls : classes) {
                System.out.println("+: " + cls.getIRI().getShortForm());

                System.out.println(" \tObject Property Domain");
                for (OWLObjectPropertyDomainAxiom op : ontology.getAxioms(AxiomType.OBJECT_PROPERTY_DOMAIN)) {                        
                        if (op.getDomain().equals(cls)) {   
                            for(OWLObjectProperty oop : op.getObjectPropertiesInSignature()){
                                 System.out.println("\t\t +: " + oop.getIRI().getShortForm());
                            }
                            //System.out.println("\t\t +: " + op.getProperty().getNamedProperty().getIRI().getShortForm());
                        }
                    }

                    System.out.println(" \tData Property Domain");
                    for (OWLDataPropertyDomainAxiom dp : ontology.getAxioms(AxiomType.DATA_PROPERTY_DOMAIN)) {
                        if (dp.getDomain().equals(cls)) {   
                            for(OWLDataProperty odp : dp.getDataPropertiesInSignature()){
                                 System.out.println("\t\t +: " + odp.getIRI().getShortForm());
                            }
                            //System.out.println("\t\t +:" + dp.getProperty());
                        }
                    }

            }

        } catch (OWLOntologyCreationException ex) {
            Logger.getLogger(OntologyAPI.class.getName()).log(Level.SEVERE, null, ex);
        }
}

Answer 2

我认为这应该是一个答案，而不是评论。

要获取类的属性，只需使用 getSuperClasses。所以，如果你有这样的课

A
  :subClassOf (r some B)

然后(getSuperClasses A)将返回一个带有单个的集合，该集合OWLClassExpression将是OWLObjectSomeValuesFrom. 反过来，您可以使用getProperty.